Thank for that input. My flights are very far. Most of my work is in Barbados, St. Lucia, Trinidad, St. Maarten, Bermuda, Etc. Barbados is 1800NM from my home in FL so I would be looking for a Fuel stop in Turks and Caicos and then on to Barbados. This is assuming I can make 900NM with some form of Long range fuel tank setup. If not, I'll have to plan two stops. Once in Barbados, Trips will reduce in length, except for Aruba, Curacao which far from there. As you can see with distances like that, I'm like the altitude for a margin of safety as well as the advantages you list. My only short trip will be to Nassau Bahamas.
What kind of range can I realistically expect from the 231?